Crate proc_macro_utils

Some useful functions on proc_macro and proc_macro2 types

E.g. pushing tokens onto TokenStream and testing for specific punctuation on TokenTree and Punct

It also adds the assert_tokens! and assert_expansion! macros to improve unit testability for proc-macros.

Macros

• assert_expansionparser
  Allows simple unit testing of proc macro implementations.
• assert_tokensparser
  Asserts that the lhs matches the tokens wrapped in braces on the rhs.

Structs

• TokenParserparser
  Wrapper for TokenStream::into_iter allowing not only to iterate on tokens but also to parse simple structures like types or expressions, though it does not make any claims about their correctness.

Traits

• Delimited
  Trait to test for delimiters of groups
• TokenStream2Extproc-macro2
  Generic extensions for proc_macro2::TokenStream
• TokenStreamExtproc-macro
  Generic extensions for proc_macro::TokenStream
• TokenTree2Extproc-macro2
  Generic extensions for proc_macro2::TokenTree
• TokenTreeExtproc-macro
  Generic extensions for proc_macro::TokenTree
• TokenTreeLiteral
  Trait to parse literals
• TokenTreePunct
  Trait to test for punctuation